Lesson 34: Excercise and how it affects gaseous exchanges

Hi,

Everyone know that exercise increases the heart rate and the breathing rate among other changes. Find out how and why these changes occur.

With the aid of this set of powerpoint slides you will revise the following concepts:

• structure of the respiratory system, its labelling
• alveolus and its structure
• gaseous exchanges at the alveolar surface
• scanning electron micrograph of the cilia cells, the goblet cells of the trachea and bronchi
  
• pulse rate and heart rate
• heart structure and heart cycles/cardiac cycles
  
• blood pressure changes

Gaseous Exchange And Exercise

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Cheers

Lesson 33: Gaseous exchange at the lungs

Hi,

These cheerful Powerpoint slides are more suitable for the Pure Biology students. It deals with details of how oxygen and carbon dioxide travel in the blood.

The details of how carbon dioxide enters the red blood cell and form carbonic acid which later dissociates to form hydrogen ions and bicarbonate ions. The bicarbonate ion then diffuses back into the plasma and travels to the lungs and then enter back into the rbc. This reaction occurs in the reverse order to form carbon dioxide which then diffuses into the alveoli. This concept is well explained with large diagrams.

Gas Exchange (Further Human Physiology)

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Cheers